4 men have been killed and 25 others injured when the bus they were travelling on crashed into a truck in Korat during the early hours of Friday morning, reports Thaivisa News.

The crash occurred near the weighbridge on the Friendship Highway as the bus travelled from Bangkok to Roi Et.

Thai media reports the bus, which was operated by the Saphan Roi Et Tour Co. Ltd., was speeding when it crashed into the back of an 18 wheel truck just after 2am.

The front of the bus suffered extensive damage as a result.

Passengers said they heard the driver shouting that the brakes had stopped working. However, when emergency services attended the scene, the driver had already fled and police are currently searching for him.

The four men who died were reported to have been killed instantly such was the impact of the collision. The other injured passengers were transferred to Maharat and Nong Song Hospitals.

The driver of the truck which was loaded with asphalt said he was turning onto the weighbridge when the bus struck his truck.